Weather in September
Sea temperature
In Portugalete, Spain, in September, the average water temperature is 20.6°C (69.1°F).Note: For the majority of people, swimming in water at 20.6°C (69.1°F) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in Portugalete, Spain, is 12h and 30min.On the first day of the month, sunrise is at 07:36 and sunset at 20:47. On the last day of September, in Portugalete, sunrise is at 08:08 and sunset at 19:54 CEST.
Frequently asked questions
What is the sea water temperature in September in Portugalete?
In Portugalete, Spain, the average seawater temperature in September is 20.6°C (69.1°F). For swimming, a surface water temperature of 20.6°C (69.1°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
How many hours of daylight does Portugalete have in September?
In Portugalete, the average day length in September is 12h and 30min.
What time are sunrise and sunset in September in Portugalete?
On the first day of September in Portugalete, sunrise is at 07:36 and sunset at 20:47. On the last day of the month, sunrise is at 08:08 and sunset at 19:54 CEST.
Average sea temperature in September
Portugalete, Spain
- Average sea temperature in September: 20.6°C
The best month for swimming (with the highest average sea temperature) is August (21.2°C).
The coldest month (with the lowest average sea temperature) is February (12.7°C).
Average daylight in September
Portugalete, Spain
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
Portugalete, Spain
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